Today, we’re releasing GPT‑5-Codex—a version of GPT‑5 further optimized for agentic coding in Codex. GPT‑5-Codex was trained with a focus on real-world software engineering work; it’s equally proficient at quick, interactive sessions and at independently powering through long, complex tasks. Its code review capability can catch critical bugs before they ship. GPT‑5-Codex is available everywhere you use Codex—it’s the default for cloud tasks and code review, and developers can choose to use it fo...